
public class CodeStandard {
    public static void main(String [] args){
        StringBuffer buffer = new StringBuffer();
        buffer.append('S');
        buffer.append("tringBuffer");
        System.out.println(buffer.charAt(1));
        System.out.println(buffer.capacity());
        System.out.println(buffer.indexOf("tring"));
        System.out.println("buffer = " + buffer.toString());
        if(buffer.capacity()<20) {
            buffer.append("1234567");
        }
        for(int i=0; i<buffer.length();i++){
            System.out.println(buffer.charAt(i));}//test
    }
}